mirror of
https://github.com/google/sandboxed-api.git
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139 lines
4.2 KiB
C++
139 lines
4.2 KiB
C++
// Copyright 2020 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef SANDBOXED_API_TOOLS_CLANG_GENERATOR_GENERATOR_H_
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#define SANDBOXED_API_TOOLS_CLANG_GENERATOR_GENERATOR_H_
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#include <string>
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#include "absl/container/flat_hash_set.h"
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#include "absl/memory/memory.h"
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#include "absl/status/status.h"
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#include "absl/status/statusor.h"
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#include "absl/strings/string_view.h"
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#include "clang/AST/ASTConsumer.h"
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#include "clang/AST/RecursiveASTVisitor.h"
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#include "clang/Frontend/CompilerInstance.h"
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#include "clang/Frontend/FrontendAction.h"
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#include "clang/Tooling/Tooling.h"
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#include "sandboxed_api/tools/clang_generator/emitter.h"
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#include "sandboxed_api/tools/clang_generator/types.h"
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namespace sapi {
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struct GeneratorOptions {
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template <typename ContainerT>
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GeneratorOptions& set_function_names(const ContainerT& value) {
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function_names.clear();
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function_names.insert(std::begin(value), std::end(value));
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return *this;
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}
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bool has_namespace() const { return !namespace_name.empty(); }
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absl::flat_hash_set<std::string> function_names;
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// Output options
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std::string work_dir;
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std::string name; // Name of the Sandboxed API
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std::string namespace_name; // Namespace to wrap the SAPI in
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// Output path of the generated header. Used to build the header include
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// guard.
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std::string out_file;
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std::string embed_dir; // Directory with embedded includes
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std::string embed_name; // Identifier of the embed object
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};
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class GeneratorASTVisitor
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: public clang::RecursiveASTVisitor<GeneratorASTVisitor> {
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public:
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explicit GeneratorASTVisitor(const GeneratorOptions& options)
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: options_(options) {}
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bool VisitFunctionDecl(clang::FunctionDecl* decl);
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private:
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friend class GeneratorASTConsumer;
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TypeCollector collector_;
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std::vector<clang::FunctionDecl*> functions_;
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const GeneratorOptions& options_;
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};
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class GeneratorASTConsumer : public clang::ASTConsumer {
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public:
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GeneratorASTConsumer(std::string in_file, Emitter& emitter,
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const GeneratorOptions& options)
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: in_file_(std::move(in_file)), visitor_(options), emitter_(emitter) {}
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private:
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void HandleTranslationUnit(clang::ASTContext& context) override;
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std::string in_file_;
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GeneratorASTVisitor visitor_;
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Emitter& emitter_;
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};
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class GeneratorAction : public clang::ASTFrontendAction {
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public:
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GeneratorAction(Emitter& emitter, const GeneratorOptions& options)
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: emitter_(emitter), options_(options) {}
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private:
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std::unique_ptr<clang::ASTConsumer> CreateASTConsumer(
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clang::CompilerInstance&, llvm::StringRef in_file) override {
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return absl::make_unique<GeneratorASTConsumer>(std::string(in_file),
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emitter_, options_);
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}
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bool hasCodeCompletionSupport() const override { return false; }
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Emitter& emitter_;
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const GeneratorOptions& options_;
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};
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class GeneratorFactory : public clang::tooling::FrontendActionFactory {
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public:
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// Does not take ownership
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GeneratorFactory(Emitter& emitter, const GeneratorOptions& options)
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: emitter_(emitter), options_(options) {}
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private:
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#if LLVM_VERSION_MAJOR >= 10
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std::unique_ptr<clang::FrontendAction> create() override {
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return absl::make_unique<GeneratorAction>(emitter_, options_);
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}
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#else
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clang::FrontendAction* create() override {
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return new GeneratorAction(emitter_, options_);
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}
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#endif
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Emitter& emitter_;
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const GeneratorOptions& options_;
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};
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std::string GetOutputFilename(absl::string_view source_file);
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inline absl::string_view ToStringView(llvm::StringRef ref) {
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return absl::string_view(ref.data(), ref.size());
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}
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} // namespace sapi
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#endif // SANDBOXED_API_TOOLS_CLANG_GENERATOR_GENERATOR_H_
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